C343 what they can't hear

Xiao Chen, who was at the side, looked at Cheng Feng's act and was speechless.

And what he was most curious about, was what exactly was it that Cheng Feng gave Bai Yan.

What's the use of that little notebook?

Why was it that after Bai Yan saw it, her attitude towards Cheng Feng changed by 180 degrees?

He suddenly became respectful